The Computer Fundamentals intend to help English for computer Engineering to cope with the fundamental concepts in computer science which are often used for evaluating students' content knowledge. It provides information to those who want to have a practical knowledge of computer science. The book is intended as a guide to indicate the fundamental concepts of hardware, memory, and networks. This book provides a simple way of presenting the key terms in computer Engineering. The Computer Fundamentals is designed to appeal to undergraduate and graduate students to master their computer knowledge or brush up their information in the basic concept in computer knowledge.